The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 2013
Filed:
Nov. 12, 2009
Myoung Hwan OH, Daejeon, KR;
Jun Seok Nho, Daejeon, KR;
Jong Pil Kim, Daejeon, KR;
Jang Yul Kim, Daejeon, KR;
Seung Beom Cho, Daejeon, KR;
Myoung Hwan Oh, Daejeon, KR;
Jun Seok Nho, Daejeon, KR;
Jong Pil Kim, Daejeon, KR;
Jang Yul Kim, Daejeon, KR;
Seung Beom Cho, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
Disclosed is a method for preparing cerium carbonate powder by mixing a cerium precursor solution with a carbonate precursor solution to cause precipitation, wherein at least one solvent used in the cerium precursor solution and the carbonate precursor solution is an organic solvent. Cerium carbonate powder obtained from the method, cerium oxide powder obtained from the cerium carbonate powder, a method for preparing the cerium oxide powder, and CMP slurry comprising the cerium oxide powder are also disclosed. The method for preparing cerium carbonate using an organic solvent, allows the resultant cerium carbonate powder to have a size and shape controllable from the initial nucleation step. Additionally, it is possible to easily control the size and shape of cerium oxide powder obtained from the cerium carbonate powder.